Class: MathExpression

Inherits:
Object
  • Object
show all
Defined in:
lib/Expression/parser.rb,
lib/Expression/getters.rb,
lib/Expression/identifiers.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ MathExpression

Returns a new instance of MathExpression.



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# File 'lib/Expression/parser.rb', line 9

def initialize()
  @input = nil
  @look = nil
end

Instance Method Details

#eval(input) ⇒ Object 



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# File 'lib/Expression/parser.rb', line 14

def eval(input)
  @input = input
  init
  temp = calculate
  unless @look.nil?
    raise InvalidInput, "unexpected input: \"#{@look}\""
  end
  temp
end